Pith Number

pith:MEZWESCD

pith:2009:MEZWESCDPJSGHTTAX2EO27M3PZ

not attested not anchored not stored refs pending

New Young Planetary Nebulae in IPHAS

A. Mampaso, A. Zijlstra, C. Giammanco, G. Delgado-Inglada, J. Drew, J. Sokoloski, K. Viironen, L. Sabin, M. Rodriguez, P. Groot, Q. A. Parker, R. Greimel, R. L. M. Corradi, S. E. Sale, Y. Unruh

arxiv:0904.1937 v2 · 2009-04-13 · astro-ph.GA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MEZWESCDPJSGHTTAX2EO27M3PZ}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T02:14:06.258375Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

61336248437a6463ce60be88ed7d9b7e69514e721468c6fbb7bacb1561b9dc60

Aliases

arxiv: 0904.1937 · arxiv_version: 0904.1937v2 · doi: 10.48550/arxiv.0904.1937 · pith_short_12: MEZWESCDPJSG · pith_short_16: MEZWESCDPJSGHTTA · pith_short_8: MEZWESCD

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/MEZWESCDPJSGHTTAX2EO27M3PZ \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 61336248437a6463ce60be88ed7d9b7e69514e721468c6fbb7bacb1561b9dc60

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9f0034ea21a038b0e041b84b2a055751caf7c159a76a4173718b121a73949c23",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2009-04-13T10:12:27Z",
    "title_canon_sha256": "a9b185ec36edfe2473b457f53352c58d3349239abb60d123e2a74540e2958d68"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.1937",
    "kind": "arxiv",
    "version": 2
  }
}